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. Author manuscript; available in PMC: 2012 Nov 1.
Published in final edited form as: Ann Biomed Eng. 2012 Aug 23;40(11):2379–2398. doi: 10.1007/s10439-012-0613-5

Figure 1.

Figure 1

The probability density function of regional myocardial blood flows relative to the whole heart mean flow from the deposition densities of 15 μm microspheres in the hearts of 13 awake baboons. Data were 4 to 6 estimates in each of 2,706 tissue pieces totalling 13,114 estimates of blood flow per gram of tissue. The solid line is the distribution for the whole heart; the dotted lines are for left ventricle (LV), right ventricle (RV) and atria (Atr). The shaded patch outlines one standard deviation of the fi in each of the 25 classes of relative flows for the whole heart, where each class width is 10% of the mean flow, and the number of distributions was 67. The area under each curve represents the fraction of heart weight: LV 70%, RV 20% and atria 10%. The mean regional flow relative to the heart mean were LV 1.14, RV 0.81, and atria 0.41. From an average of 208 tissue pieces per heart, the relative dispersion, RD, for the flow heterogeneity, defined as the standard deviation divided by the mean, was: whole heart 0.38, for LV 0.30, RV 0.32, and atria 0.17. (From King et al.74)